THE LEAD-CABLE BOREK IN CALIFORNIA. 7 



in southern California. In 1918 insect injury was reported at Gal- 

 veston and Houston, Tex., six years after the Brownsville case. 



By far the greater number of cases of insect injury to the lead 

 sheathing of aerial cables have occurred in California, where the 



Fig. 5. — Map showing distribution of trouble caused by the California lead-cable borer. 



insect responsible for the trouble is the bostrichid beetle ScoUda. 

 dedivis Lee, 51^. {Sinoxylon declive^ 56^ SS, 69, 60, 61, 62, 63, 66, 67; 

 Xylopertha declive, 57, 65, 66, 68; Fig. 4.) Southern California has 

 been one of its principal centers of activity. 



